Hierarchy of Preferred Terms for Work Breakdown Structure

• Work Breakdown Structure
• Flight Systems and Ground Support
• Aircraft / Spacecraft
• Command & Data Handling
• Crew
• Flight Software
• Guidance Navigation and Control
• Mechanical
• Power
• Propulsion
• Telecommunications
• Thermal
• Wiring Harness
• Education and Public Outreach
• Formal education
• Informal education
• Management and coordinated activities
• Media support
• Public outreach
• Web site development
• Ground System(s)
• Ground System Hardware and Software
• Design
• Development
• Implementation
• Integration
• Test and the associated support equipment
• Project testbeds
• Disposal
• Maintenance
• Operations
• Telemetry and Radiometric data
• Archiving
• Distributing
• Launch Vehicle / Services
• Launch operations
• Launch vehicle
• Launch vehicle integration
• Other associated launch services
• Mission Operations System
• Analyses of system status
• Commanding
• Disposal of remaining mission resources
• Logistics
• Maneuver analysis
• Orbit determination
• Receiving/processing telemetry
• Target body orbit/ephemeris updates
• Tracking
• Trajectory analysis
• Payload
• Project Management
• Approval processes
• Non-project owned facilities
• Planning (Organizing, directing, coordinating, controlling)
• Project reserves.
• Safety and Mission Assurance
• Design
• Development
• Review and verification of practices and procedures
• Safety assessment
• Science / Technology
• Defining the science or demonstration requirements
• Performing data analysis and archiving.
• Providing the algorithms for data processing and analyses
• Systems Engineering
• Configuration control
• Control and monitoring of the technical program
• Human rating
• Integrated test planning
• Interface control documents (ICDs)
• Risk management
• Software engineering
• Specialty engineering
• System architecture development
• System requirements writing
• Technical oversight
• Systems Integration and Testing
• Aircraft / Spacecraft
• Command & Data Handling
• Crew
• Flight Software
• Guidance Navigation and Control
• Mechanical
• Power
• Propulsion
• Telecommunications
• Thermal
• Wiring Harness
• Launch Vehicle / Services
• Launch operations
• Launch vehicle
• Launch vehicle integration
• Other associated launch services
• Mission operations
• Payloads
• Project's systems